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how many rounds of chromosome replication occur i the cell pirior to mitosis
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoMitosis has 5 phases:
.Prophase
.Prometaphase
.Metaphase
.Anaphase
.Telophase
Wiki User
∙ 10y agoDNA replication (chromosome replication) occurs only once before mitosis or meiosis.
Wiki User
∙ 15y agoit has 12 replications during mitosis
Wiki User
∙ 12y agoTwo
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How often in the life of a cell does replication occur?
Replication occurs only once in the life of the cell.
Where does DNA replication occur in a cell?
Cell's nucleus. It contains the majority of the genetic code for the cell. The nucleus maintains the integrity of the cell and regulates cell replication.
When does the first cell division in meiosis occur?
When the chromosome is :
Mutation that occurs at the chromosome level resulting in changes in the gene distribution?
Chromosomal mutationAneuploidyAneuploidy occurs when a cell has the wrong number of chromosomes either due to an extra or missing chromosome. This type of problem can occur during the anaphase part of M phase. Through a process called nondisjunction the chromosome pairs may not separate properly causing one of the daughter cells to receive both copies of a chromosome and the other daughter cell receives no copies of that chromosome. Therefore, one daughter cell will have an extra chromosome and the other daughter cell will have a missing chromosome. Also, this problem can occur if there is a lag during anaphase. When the pairs of chromosomes separate to each side of the cell, a chromosome may travel too slow which would cause it to not be incorporated into the new cell. This new cell would be missing a chromosome. DeletionChromosome Deletions occur when the cell is missing a portion of a chromosome. This type of problem can occur during S phase if there is a problem during DNA replication or other parts of interphase if the DNA is damaged. DuplicationChromosome Duplications occur when a cell has a repeated portion of a chromosome which causes the cell to have extra information. This type of problem can occur during S phase if there is a problem during DNA replication. InversionChromosome Inversions occur when a piece of a chromosome breaks and that piece is reattached in the opposite orientation. This type of problem can occur during interphase if the DNA is exposed to damage that causes DNA breakage. InsertionChromosome Insertions occur when a piece of a chromosome that had broken reattaches in a location where this genetic material is not typically found. This type of problem can occur during interphase if the DNA is broken and then repaired by attaching to a different location. TranslocationThere are two types of translocations: reciprocal and robertsonian. A reciprocal translocation occurs when two nonhomologous chromosomes break and then switch genetic material. A robertsonian translocation occurs when two chromosomes break on the p arm near the centromere and then the two q arms attach together while the p arms are lost. Either of these types of translocation can occur at any point during the cell cycle.
When during a cell cycle does Replication occur?
The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosis The stage of the cell cycle, replication occurs is meosisDNA replication occurs during the S phase of interphase.
Does chromosome replication occur in mitosis and meiosis?
In normal eukaryotic cell cycle or in case of bacterial chrosome, DNA replication occur to replicate the whole chromosome.
When does chromosomal replication occur?
It occurs in the nucleus of a cell
Where the cell does DNA replication take place?
DNA replication takes place in the chromosome which is located in the nucleus of a cell.
When does replication occur in a cell?
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How often in the life of a cell does replication occur?
Replication occurs only once in the life of the cell.
Does cell growth and replication continue through the cell cycle?
No. Cell growth and DNA replication occur during interphase but do not occur during mitosis and cytokinesis.
Where in the cell does DNA take place?
DNA replication takes place in the chromosome which is located in the nucleus of a cell.
Where does DNA replication occur in a cell?
Cell's nucleus. It contains the majority of the genetic code for the cell. The nucleus maintains the integrity of the cell and regulates cell replication.
Where does DNA replication occur within a cell?
The Nucleus
Where does DNA replicate take place in the cell?
DNA replication takes place in the chromosome which is located in the nucleus of a cell.
In what part of the cell does the replication occur?
DNA replication occurs during Interphase. This is not normally part of the cell division cycle but interphase must occur before subsequent stages such as prophase and metaphase can occur.
Where in the cell does semiconservative DNA replication occur?
it occurs in the nucleus
